Apparatus for cracking oil



Feb/15,1927. v 9 9 G. EGLOFF ET AL APPARATUS FOR CRACKING OIL OriginalFiled Au 21. 1920 carbon from the system in the falling I Patented Feb.15, 1927.

UNITED STAT PATENT OFFICE.

-VERSAL OIL PRODUCTS COMPANY, or

sou'rn DAKOTA.

CHICAGO, ILLINOIS, A CORPORATION OF- APIPARATUS FOR CRACKING OIL. v

Application filed August 21, 1920, Serial No. 405,100. Renewed June 9,1926.

This invention relates to improvements in apparatus for cracking oil.The object of the invention is to provide effective means forcontinuously removing the precipitated process of the so-calledcontinuous type.

In the drawings Fig. 1 is a side elevation partly in section of ourimproved apparatus.

Fig. 2 is a section taken through line AA of Fi' 1.

ReEeI-ring to the drawings, 1 deslgnates a furnace provided with burner,2, firebox, 3,

and stack, 4. In this furnace is mounted the heatin elements, which mayconsist of a pair 0 headers, 5 and 6, connected by a plurality of tubes,7-7. The raw charging oil may be continuously delivered to the header,

5, through the chargingline, 8, connected to any suitable charging pumpand supply tanks (not shown). The oil passes out of the header, 6,through line, 9, controlled'by valve, 10, to the upper part of a carbonprecipitatin chamber, 11. This chamber, 11,

is provided witha vertically extending par- 2 tition or septum,*12,which extends fronrtlrr top of the chamber, 11, down nearly to thebottom thereof, as-shown clearly in dotted line in Fig. 1. The vaporsand gases which are-not condensed in the chamber, 11, pass out throughline, 13, controlled by valve, 14,

into the lower part of dephlegmator, 15.

The vapors condensed in the deplilegmator,

15, are returned by pipe, 16, to the charging line, 8. A valve, 17, isinterposed in the line 16. The reflux condensate is prevented from backinto the pipe, 13, by means of a space cap member, 18, mounted abovethat portion of the pipe, 13, which projects into the lower end of thedephlegmator. The upper part of the dephlegmator is connected by line,19, controlled by valve, 20, to a water condenser coil, 21. Thiscondenser coil, 21, is connected by line. 22, in Which may be interposeda valve, 23, to the receiver, 24. The receiver, 24, is provided withliquid dra-Wofi' pipe, 25, controlled by throttle valve,

26, and gas outlet pipe, 27 controlled by valve,

- 28. It is also provide with liquid level gauge, 29, and pressuregauge, 30. The arrangement of the valves referred to is such that auniform pressure may be maintained oh the system from the heatingelement to and through the receiver, or a differential pressure may bemaintained on various parts,

of the system by suitably regulating the valves. I In the event ofmaintaining a higher pressure on the still than the dephlegmator, thereflux condensate will have to be pumped back to the line, 16, in whichcase a'pump ether with its precipitated carbon content is constantlydrawn 01f through the rotating valve plug, 31, to delivery pipe, 32.-This valve plug is driven through shaft, 33, and gearing 34, by anysuitable source of power. The arrangement is suchthat the carbonprecipitating chamber, l1, will be constantly freed of its heavy residueand carbon con tent, while at the same time permitting the un'condensedvapors to pass freely to the dephlegmator: The oil in the still ispreferably maintained in liquid phase so as to preventcarbon'precipitation in the still, or, in other words, vaporizationtakes place in the qhamber, 11, where the carbon is thus precipitated.

IVe claim as our prevention:

1..An apparatus for treating oil compris ing a still having a pair ofheaders, communicating cracking tubes between said headers, means forfeeding Oll to one of the headers to pass through said tubes to theother header and to be heated during such passage to the crackingtemperature while maintained in a substantially liquid phase, avertically disposed expansion and separating chamber adapted to receiveheated oil after passage through said cracking coils, a verticalpartition in said chamber for causing the hydrocarbon'materialintroduced thereto to pass downwardly through the chamber and thenceupwardly on an opposite side of said partition, a continuously rotatingvalve at the lower end of said chamber for discharging liquid oil andprecipitated carbon therefrom and a vapor discharge from the oppositeend of said header for discharging vapors therefrom.

2. An apparatus for treating oil, comprising a tube still through whichoil is adapted to be passed and heated, during passage therethrough, toa cracking temperature, a

vertically disposed expansion separating chamber, means for deliveringheated oil constituents from said tube still to said separating chamber,means within said separat-' ingehamber for causing saidheated con:stltuents to pass downwardly throughout substantially the entire len hthereof and then to rise vertically theret rough, a driven rotary valveat the lower end of said chainber for-discharging liquid oil andpreeipi: tated carbon there om,.and means or tak-' ing ofi apors fromthe upper end of said chamber. v

. 3. An apparatus. for treating oil, comprising a tube still throughwhich oil is adapted are ting chan ber, means within. said separatinchamber-for-pausing' said. heatedeon stituents to pass; downwardly..-.-.thlt c'm" hout substantially the entire .lengt-h thereo and. then torisevertieally therethrough,' a driven rotary vaive'a't the lower end ofsaid cham her "for discharging. liquid'oil and precipitated carbontherefrom and mealis for taking oifvapors from the upper end of'saidchamber, a dephlegmator for; receiving the vapors taken off frofn saidseparating chamber, means for returning reflux condensate from saiddephlegmator to. said tube stil l,= and means for maintaining. asuperatmos-i ment in the apparatus.

GUSTAV EGLOFF. HARRY P. BENNER.

pheric pressureon the oil undergoing treat-

